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CMX641A - DUAL SPM/SECURITY DETECTOR/GENERATOR

General Description

The CMX641A is a low power, system selectable Dual Subscriber Pulse Metering (SPM) Detector two detectors on a single chip

to indicate the presence on a telephone line of either 12kHz or 16kHz telephone call charge frequencies.

Key Features

  • Two (12kHz/16kHz) SPM Detectors.
  • Selectable 12kHz/16kHz ASK Generator.
  • Selectable Tone Follower or Packet Mode 3-State Outputs.
  • Excellent Speech-Band Rejection.
  • Hardwired Control for Non-µC Systems.
  • Selectable Bandwidth Limits and Stable Centre Frequency from a Standard Xtal.

📥 Download Datasheet

Datasheet Details

Part number CMX641A
Manufacturer CML
File Size 464.26 KB
Description DUAL SPM/SECURITY DETECTOR/GENERATOR
Datasheet download datasheet CMX641A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
CMX641A DUAL SPM/SECURITY DETECTOR/GENERATOR D641A/5 January 2002 Features • Two (12kHz/16kHz) SPM Detectors • Selectable 12kHz/16kHz ASK Generator • Selectable Tone Follower or Packet Mode 3-State Outputs • Excellent Speech-Band Rejection • Hardwired Control for Non-µC Systems • Selectable Bandwidth Limits and Stable Centre Frequency from a Standard Xtal Applications Provisional Information • SPM for Pair-Gain Systems • Payphone Security Applications • Call Charge Applications in PBX and PABX Line Cards • Out-of-Band Signalling Systems • Low-Voltage FX/MX641 Replacement • µC Software-Programmable Secure Payphone Call Charging Apparatus 1.